>>33252950In most cases I would say "just let it go and if it happens, it happens". Because it's not easy to go through with that when you're in the position of using suicide as a threat.
If your situation is that your sister is calling you while you're hanging out with your boring cumdumpster and demanding you go back or she kills herself for real though, you should do as your sister says. Who needs a stupid hussy when you have your amazing sister at home willing to take care of you anyways.